Telerik UI for Silverlight now provides touch support. The functionality is built on top of our TouchManager framework which provides the needed extensibility and the ability for each of the specific controls in the suite to support only the needed for it gestures.
Touch gestures describe gestures in which you use a finger or stylus to a movement over a control or object on the screen. These are the commonly supported ones for the suite:
|Swipe||The user presses and holds on the screen and then drags the finger / stylus in any direction.|
|Pinch||The user touches the screen with two (or more) fingers and moves them inwards or outwards.|
|Tap||The user touches the screen.|
|Tap and Move||The user presses and holds the screen for few seconds (between 600ms and 1500ms) and drags his finger / stylus in any direction.|
|Tap and Hold||The user presses and holds the screen for a few seconds (more than 1500ms).|
As of version Q2 2015, the TouchIndicator is represented by a single circle.
Below are listed the controls and their behavior with the different gestures:
|Control||Swipe||Pinch||Tap||Tap and Move||Tap and Hold||Custom|
|RadCalendar||Next/Previous||Semantic zoom (only outwards)||Click||-||-||-|
|RadCoverFlow||Scroll with inertia||-||Click||Scroll (if possible)||-||-|
|RadDiagram||Pan with Inertia||Zoom||Select||Scroll||Shows circle for Rectangle Selection||Tap and Hold and Move will start a rectangle Selection|
|RadGanttView||Scroll with inertia||Zoom||Click||On item - Drag&Drop; on slot - Scroll||-||-|
|RadGauge||-||-||Click||Moves indicators||Shows tooltip||-|
|RadGridView||Scroll||-||Click/Selection||HeaderCell/GroupPanelItem - Drag&Drop||-||-|
|RadListBox||Scroll with inertia||-||Click||Drag&Drop||-||-|
|RadMap||Pan||Zoom||Click/Selection||-||-||Double Tap -> Zoom|
|RadPdfViewer||Scroll||Zoom||Click||-||-||Selection markers to extend the selection|
|RadRichTextBox||Scroll||Zoom||Click (move caret to position)||-||Show context menu||Selection markers to extend the selection|
|RadScheduleView||Horizontally - Previous/Next; Vertically - Scroll||Timeline - Zoom, others - switching the views||Click/Selection||On item - Drag&Drop; on slot - multiple slots selection||-||-|
|RadSpreadsheet||Scroll||Zoom||Click||-||-||Selection markers to extend the selection|
|RadTimeBar||Scroll||Zoom||Click/Selection||Moves Selection||Selection||Double Tap -> Extends selection|
|RadTreeListView||Scroll||-||Click||-||Shows a circle to be dragged||-|
|RadTreeView||Scroll with Inertia||-||Click/Selection/Expand||-||Shows touch Indicator||Tap and Hold and Move will Start Drag operation|
As of version Q2 2014, we have introduced a new IsTouchEnabled property, which controls the state of TouchManager on application level. Setting it to False will prevent any touch events to be fired.
The property is of boolean type and its Default value is True.
You can also take a look at the Touch Modes help article